Diodes Incorporated SK13-13-F

Overview

SK13-13-F from Diodes Incorporated is a surface-mount Schottky barrier rectifier with 30 V maximum recurrent peak reverse voltage, 1.0 A average forward rectified current at 75°C, and 0.70 V maximum forward voltage at 1.0 A, used in low-loss DC power supply output stages and DC-DC converter freewheeling paths.

For engineers reviewing the SK13-13-F datasheet, SK13-13-F pinout, SK13-13-F application, or SK13-13-F equivalent, key selection factors include its SMB package thermal resistance (25 °C/W), low forward voltage drop for efficiency-critical 5–12 V rail rectification, and 25 A non-repetitive surge rating for transient robustness.

Technical Context

This Schottky diode employs high-temperature metallurgically bonded contacts to achieve low forward voltage and fast switching with no minority-carrier storage delay. Its junction-to-lead thermal resistance of 25 °C/W enables reliable operation at 75°C ambient with 1.0 A DC load on standard 6.0 mm² copper pads.

The device exhibits 110 pF typical junction capacitance at 1.0 MHz and 4.0 V reverse bias, supporting moderate-frequency (<1 MHz) rectification. It is rated for operating junction temperatures from –65°C to +125°C and storage up to +150°C.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), molded plastic case with UL 94V-0 flammability rating, moisture sensitivity level 1, and matte tin lead-free plating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with SK13-13-F, B130B-F delivers lower conduction loss but shares identical surge and thermal specs, while SS13-F adds tighter capacitance control for faster-switching topologies-both offer drop-in compatibility with improved electrical performance in specific use cases.

Availability

SK13-13-F is available at Aetrix Electronics and suitable for AC-DC adapters, USB power delivery modules, and industrial sensor power supplies requiring stable component supply and RoHS-compliant manufacturing.

Supply support for SK13-13-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management and signal integrity solutions for industrial, computing, and consumer markets.

The SKxx series targets cost-effective, high-volume surface-mount rectification needs, emphasizing thermal robustness, surge resilience, and compatibility with lead-free reflow processes.

FAQ

Is SK13-13-F suitable for synchronous rectification replacement?

Yes - SK13-13-F is commonly used as a low-cost alternative to MOSFET-based synchronous rectifiers in 5–12 V buck and flyback converters. Its 0.70 V VF and 1.0 A I(AV) rating support continuous conduction mode operation up to ~200 kHz, though conduction loss exceeds MOSFETs above 1 A.

What is the maximum PCB copper area needed for thermal management?

Per Figure 1 in DS13003 Rev. 8, a 6.0 mm² copper pad per terminal sustains 1.0 A at 75°C ambient. No additional heatsink is required; doubling pad area reduces junction temperature by ~5°C under same conditions.

Does SK13-13-F meet automotive AEC-Q101 requirements?

No - SK13-13-F is not AEC-Q101 qualified. It is rated for industrial temperature range (–65°C to +125°C), but lacks stress testing, failure analysis, and qualification documentation required for automotive applications.

Can SK13-13-F be used in place of SK13-13 (lead-based version)?

Yes - SK13-13-F is the RoHS-compliant, lead-free variant of SK13-13, with identical electrical specs, SMB package dimensions, and thermal characteristics. The "-F" suffix denotes matte tin plating and compliance with EU Directive 2011/65/EU.